2026-05-20Views：
An air compressor with an oil content of less than 0.01 mg per cubic meter can be called an oil-free air compressor. In other words, this value is 0.01ppm, that is, 0.01 parts per million, which can be said to be almost negligible.
For example, if you spread a drop of oil evenly into a very large room, the oil content in the room is probably close to this figure. Therefore, when the gas discharged from an air compressor is less than this level of oil, the industry recognizes that it is oil-free.
For ordinary oil-injected screw air compressors, the exhaust oil content is generally about 3 mg per cubic meter, which is hundreds of times higher than the 0.01 standard, so it can only be regarded as an oil machine.
What about the water-lubricated air compressor? It uses water instead of oil to seal the rotor and take away the heat. Because the entire compression process does not use oil at all, the discharged gas naturally does not contain oil, and the oil content can easily be less than 0.01 mg per cubic meter, or even lower. In other words, the water-lubricated air compressor is naturally suitable for reaching the oil-free standard in principle. It does not need to be pulled hard by adding a filter at the back, but there is no oil from the source. This is why food, medicine, electronics, which are particularly sensitive to air, are increasingly choosing water-lubricated air compressors.
The main difference between micro-oil and oil-based air compressors is reflected in the amount of lubricating oil used, the quality of compressed air and the field of application. The following is a specific comparative analysis: lubricating oil usage: micro-oil air compressor: a very small amount of lubricating oil is used during operation
The replacement time of the air compressor is not a fixed value, but is affected by a variety of factors, including the type, quality, use environment, maintenance, frequency and intensity of use of the air compressor. The following is a detailed analysis of these factors, and based on
Permanent magnet variable frequency screw air compressor is a kind of air compressor with permanent magnet motor and variable frequency technology. Specifically, the motor part of the permanent magnet variable frequency screw air compressor is made of permanent magnet material, which makes the motor have high efficiency, high power density and wide speed range.
The first maintenance of air compressor is a key link in the whole life cycle management of equipment, which plays an important role in ensuring the stability of operation and prolonging the service life. According to the general standards of the industry and the operating characteristics of the equipment, we are now 500.
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The 1. air pressure stable frequency conversion air compressor uses the stepless speed regulation characteristics of the frequency converter, and can start smoothly through the controller or the PID regulator inside the frequency converter; it can quickly adjust the response when the gas consumption fluctuates greatly. 2. start without impact
The maximum working time of the air compressor is not fixed, because it mainly depends on the design of the air compressor, manufacturing process, the use of the environment, maintenance and load conditions and other factors. In theory, if the air compressor is properly maintained and maintained, and
Special oil is usually used in air compressors. These oils are divided according to their performance and applicable compressor types. They are mainly divided into the following types: 1. mineral oil type Features: The price is relatively low, but under high temperature and harsh conditions The performance may not be as good as synthetic oil. Life
Whether the air compressor belongs to special equipment depends mainly on its specific purpose and parameters. Generally speaking, according to the definition of the Special Equipment Safety Law, special equipment refers to equipment that involves life safety and is more dangerous, such as boilers, pressure vessels, and pressure pipelines.
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